The Medical Heritage Library (MHL), a digital curation collaborative among some of the world’s leading medical libraries, promotes free and open access to quality historical resources in medicine. Our goal is to provide the means by which readers and scholars across a multitude of disciplines can examine the interrelated nature of medicine and society, both to inform contemporary medicine and strengthen understanding of the world in which we live. The MHL’s growing collection of digitized medical rare books, pamphlets, journals, and films number in the tens of thousands, with representative works from each of the past six centuries, all of which are available here through the Internet Archive.